WO2001048725A1 - Method for determining traffic information, control centre and terminal - Google Patents

Method for determining traffic information, control centre and terminal Download PDF

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Publication number
WO2001048725A1
WO2001048725A1 PCT/EP2000/012664 EP0012664W WO0148725A1 WO 2001048725 A1 WO2001048725 A1 WO 2001048725A1 EP 0012664 W EP0012664 W EP 0012664W WO 0148725 A1 WO0148725 A1 WO 0148725A1
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WO
WIPO (PCT)
Prior art keywords
data
road network
road
terminal
control center
Prior art date
Application number
PCT/EP2000/012664
Other languages
German (de)
French (fr)
Inventor
Jürgen WASZKEWITZ
Original Assignee
Gedas Telematics Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gedas Telematics Gmbh filed Critical Gedas Telematics Gmbh
Priority to EP00991596A priority Critical patent/EP1245019B1/en
Priority to DE50003769T priority patent/DE50003769D1/en
Priority to AT00991596T priority patent/ATE250265T1/en
Priority to AU33637/01A priority patent/AU3363701A/en
Publication of WO2001048725A1 publication Critical patent/WO2001048725A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0125—Traffic data processing
    • G08G1/0133—Traffic data processing for classifying traffic situation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
    • G08G1/0141—Measuring and analyzing of parameters relative to traffic conditions for specific applications for traffic information dissemination
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096741—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/20—Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]

Abstract

The invention relates to a method for determining traffic information within a traffic network in at least one control centre (3). Said method comprises at least one mobile detector, in particular a vehicle, equipped with a terminal (1) which has at least one position determination device (2), a data processing device (6) and a device (5) for exchanging data with the control centre (3) and which transmits at least data relating to its location to the control centre (3). The invention also relates to an appropriate control centre (3) and a terminal (1) in a mobile detector. According to the invention, data relating to the network of routes used, which is transmitted from a control centre (3), using a communication method by which the data is transmitted to a number of non-defined subscribers, can be and/or is received by the mobile detector(s). The data is only received in a passive manner in the mobile detector.

Claims

11PAT E N TA N S P R Ü C H E 11PAT EN TA NSPRÜ CHE
1. Verfahren zum Ermitteln von Verkehrsinformationen innerhalb eines Verkehrsnetzes in mindestens einer Zentrale (3), bei dem mindestens ein mobiler Detektor, insbesondere ein Fahrzeug, ein Endgerät (1) umfaßt, das zumindest eine Positionsbestimmungseinrichtung (2), eine Datenverarbeitungseinrichtung (6) und eine Einrichtung (5) zum Datenaustausch mit der Zentrale (3) aufweist, und zumindest Daten über seinen Standort an die Zentrale (3) sendet, dadurch gekennzeichnet, daß von dem mindestens einen mobilen Detektor Daten über das befahrene Straßennetz, die von einer Zentrale (3) über ein Kommunikationsverfahren, bei dem die Daten an eine Vielzahl von nicht definierten Teilnehmern übermittelt werden, ausgesendet werden, empfangbar sind und/oder empfangen werden, wobei im mobilen Detektor nur ein passiver Empfang erfolgt.1. A method for determining traffic information within a traffic network in at least one control center (3), in which at least one mobile detector, in particular a vehicle, comprises a terminal (1), the at least one position determining device (2), a data processing device (6) and has a device (5) for data exchange with the control center (3) and sends at least data about its location to the control center (3), characterized in that data from the at least one mobile detector about the road network used, which is transmitted from a control center ( 3) via a communication method in which the data are transmitted to a large number of undefined subscribers, are transmitted, can be received and / or are received, only passive reception taking place in the mobile detector.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz von der Zentrale (3) als Rundspruchnachrichten, insbesondere über ein Cell-Broadcast-Verfahren, ein Digital Audio Broadcast- Verfahren (DAB) oder ein Digital Video Broadcast-Verfahren (DVB) an eine Vielzahl von nicht definierten Teilnehmern gesendet werden.2. The method according to claim 1, characterized in that the data on the road network from the central office (3) as broadcast messages, in particular via a cell broadcast method, a digital audio broadcast method (DAB) or a digital video broadcast. Procedure (DVB) can be sent to a large number of undefined participants.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Endgerät (1) des mobilen Detektors zumindest eine Speicherung der empfangenen Daten des Straßennetzes vornimmt.3. The method according to claim 1 or 2, characterized in that the terminal (1) of the mobile detector performs at least one storage of the received data of the road network.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz zumindest die Straßenverläufe, insbesondere die geographischen Koordinaten der Straßenverläufe, insbesondere Daten der Straßenverläufe, auf denen vom mobilen Detektor eine Ermittlung des Verkehrszustandes erfolgen soll, beinhalten. - 12 -4. The method according to any one of claims 1 to 3, characterized in that the data on the road network used include at least the road courses, in particular the geographic coordinates of the road courses, in particular data of the road courses, on which the mobile detector is to determine the traffic condition , - 12 -
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz Informationen über die Straßenart und/oder die Straßeneigenschaften, insbesondere Daten über die Reisezeit und/oder -geschwindigkeit auf dem Straßennetzabschnitt, insbesondere Daten der minimalen und/oder maximalen Reisezeit und/oder -geschwindigkeit, beinhalten.5. The method according to claim 4, characterized in that the data on the road network used, information about the type of road and / or the road properties, in particular data about the travel time and / or speed on the road network section, in particular data of the minimum and / or maximum travel time and / or speed.
6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz nur Daten der Straßen und/oder Straßenabschnitte beinhalten, die für eine Verkehrsinformationserfassung relevant sind.6. The method according to claim 4 or 5, characterized in that the data on the road network used only contain data of the roads and / or road sections that are relevant for a traffic information acquisition.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß von einer einer Cell-Broadcast-Zelle nur die Daten des befahrenen Straßennetzes, die diese Cell-Broadcast-Zelle betreffen ausgesendet werden.7. The method according to any one of claims 1 to 6, characterized in that from a cell broadcast cell, only the data of the road network used, which relate to this cell broadcast cell.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die empfangenen Daten des Straßennetzes vom Endgerät (1) einer Prüfung anhand der geographischen Position des mobilen Detektors unterzogen werden und nur die für die Position relevanten Daten abgespeichert werden.8. The method according to any one of claims 1 to 7, characterized in that the received data of the road network from the terminal (1) are subjected to a check based on the geographic position of the mobile detector and only the data relevant to the position are stored.
9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Daten des Straßennetzes von der Zentrale (3) codiert gesendet werden, und nur von solchen Endgeräten (1) der mobilen Detektoren gelesen werden können, die den entsprechenden gültigen Code kennen.9. The method according to any one of claims 1 to 8, characterized in that the data of the road network from the center (3) are transmitted in coded form, and can only be read by such terminals (1) of the mobile detectors that know the corresponding valid code ,
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz zur Plausibilitätsprüfung der vom mobilen Detektor ermittelten Straßenzustandsdaten im Endgerät (1) verwendet werden und bei positivem Ergebnis zumindest die Daten über den Standort des mobilen Detektors an die Zentrale (3) gesendet werden. 13 -10. The method according to any one of claims 1 to 9, characterized in that the data on the road network used for the plausibility check of the road condition data determined by the mobile detector in the terminal (1) are used and, if the result is positive, at least the data on the location of the mobile detector the control center (3) are sent. 13 -
1 1. Zentrale zur Ermittlung von Verkehrsinformationen innerhalb eines Verkehrsnetzes, die zumindest von einem mobilen Detektor Daten über seine geographische Position erhält, dadurch gekennzeichnet, daß die Zentrale (3) derart ausgebildet ist, daß sie zumindest über ein Kommunikationsverfahren, bei dem Daten an eine Vielzahl von nicht definierten Teilnehmern übermittelt werden, Daten über das befahrene Straßennetz an den mindestens einen mobilen Detektor sendet.1 1. Center for determining traffic information within a traffic network, which receives at least from a mobile detector data about its geographic position, characterized in that the center (3) is designed such that it at least via a communication method in which data to a A large number of undefined subscribers are transmitted, and data is sent to the at least one mobile detector via the road network traveled.
12. Zentrale nach Anspruch 1 1 , dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz als Rundspruchnachrichten, insbesondere über ein Cell- Broadcast-Verfahren, ein Digital Audio Broadcast-Verfahren (DAB) oder ein Digital Video Broadcast-Verfahren (DVB) an eine Vielzahl von nicht definierten Teilnehmern gesendet werden.12. Central according to claim 1 1, characterized in that the data on the road network as broadcast messages, in particular via a cell broadcast method, a digital audio broadcast method (DAB) or a digital video broadcast method (DVB) a large number of undefined participants are sent.
13. Zentrale nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß die von der Zentrale (3) gesendeten Daten des Straßennetzes zumindest Daten der Straßenverläufe, insbesondere der geographischen Koordinaten der Straßenverläufe des Straßennetzes, insbesondere Daten der Straßenverläufe, auf denen eine Ermittlung des Verkehrszustandes erfolgen soll, aufweisen.13. Control center according to claim 11 or 12, characterized in that the data of the road network sent by the control center (3) at least data of the road courses, in particular the geographic coordinates of the road courses of the road network, in particular data of the road courses, on which a determination of the traffic condition takes place should have.
14. Zentrale nach Anspruch 13, dadurch gekennzeichnet, daß die Daten über das Straßennetz Informationen über die Straßenart und/oder die Straßeneigenschaften, insbesondere Daten der Reisezeit und/oder -geschwindigkeit auf dem Straßennetzabschnitt, insbesondere Daten der minimalen und/oder maximalen Reisezeit- und/oder -geschwindigkeit, beinhalten.14. Control center according to claim 13, characterized in that the data on the road network information about the type of road and / or the road properties, in particular data of the travel time and / or speed on the road network section, in particular data of the minimum and / or maximum travel time and / or speed.
15. Verkehrsdienstezentale nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß die Daten über das Straßennetz nur Daten der Straßen und/oder Straßenabschnitte beinhalten, die für eine Verkehrszustandserfassung relevant sind.15. Traffic service center according to claim 13 or 14, characterized in that the data on the road network contain only data of the roads and / or road sections that are relevant for a traffic condition detection.
16. Zentrale nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß die Zentrale (3) derart ausgebildet ist, daß die Daten über ein Straßennetz in einem definierten Bereich (Umfeld) gesendet werden und in unterschiedlichen Bereichen unterschiedliche Daten gesendet werden. - 1416. Control center according to one of claims 11 to 15, characterized in that the control center (3) is designed such that the data are sent over a road network in a defined area (environment) and different data are sent in different areas. - 14
17. Zentrale nach einem der Ansprüche 11 bis 16, dadurch gekennzeichnet, daß die Zentrale (3) derart ausgebildet ist, daß sie die Daten des Straßennetzes codiert aussendet, wobei die Daten nur von solchen Endgeräten (1) der mobilen Detektoren gelesen werden können, die den entsprechenden gültigen Code besitzen.17. Control center according to one of claims 11 to 16, characterized in that the control center (3) is designed such that it transmits the data of the road network in coded form, wherein the data can only be read by such terminals (1) of the mobile detectors, who have the appropriate valid code.
18. Zentrale nach Anspruch 17, dadurch gekennzeichnet, daß der jeweilig gültige Code von der Zentrale (3) über einen Mobilfunkkanal (5,8) an die mobilen Detektoren sendet.18. Control center according to claim 17, characterized in that the respective valid code from the control center (3) via a mobile radio channel (5,8) sends to the mobile detectors.
19. Endgerät in einem mobilen Detektor, welcher in Abhängigkeit vordefinierter Kriterien zumindest Daten über seinen Standort an eine Zentrale (3) sendet, das zumindest eine Positionsbestimmungseinrichtung (2), eine Datenverarbeitungseinrichtung (6) und mindestens eine Einrichtung (5) zum Senden zumindest der Daten über den Standort des mobilen Detektors an die Zentrale (3) aufweist, dadurch gekennzeichnet, daß eine Einrichtung (4) zum Empfangen von Daten, welche von der Zentrale (3) über ein Kommunikationsverfahren ausgesendet werden, bei dem die Daten an eine Vielzahl von nicht definierten Teilnehmern übermittelt werden, vorgesehen ist, wobei die Daten Daten über das befahrene Straßennetz sind.19. Terminal in a mobile detector which, depending on predefined criteria, sends at least data about its location to a control center (3), the at least one position determining device (2), a data processing device (6) and at least one device (5) for sending at least the Data on the location of the mobile detector to the center (3), characterized in that a device (4) for receiving data which are sent from the center (3) via a communication method, in which the data to a variety of undefined participants are transmitted, is provided, the data being data about the road network used.
20. Endgerät nach Anspruch 19, dadurch gekennzeichnet, daß die Daten über das befahrene Straßennetz von der Zentrale (3) als Rundspruchnachrichten, insbesondere über ein Cell-Broadcast-Verfahren, ein Digital Audio Broadcast- Verfahren (DAB) oder ein Digital Video Broadcast-Verfahren (DVB) an eine Vielzahl von nicht definierten Teilnehmern gesendet wird.20. Terminal according to claim 19, characterized in that the data on the road network from the central office (3) as broadcast messages, in particular via a cell broadcast method, a digital audio broadcast method (DAB) or a digital video broadcast. Procedure (DVB) is sent to a large number of undefined participants.
21. Endgerät nach Anspruch 19 oder 20, dadurch gekennzeichnet, daß die von der Zentrale (3) gesendeten Daten über das Straßennetz zumindest einen Teil der vordefinierten Kriterien, in Abhängigkeit derer der mobile Detektor zumindest Daten über seine momentane Position an die Zentrale (3) sendet, bilden.21. Terminal according to claim 19 or 20, characterized in that the data sent from the center (3) via the road network at least a part of the predefined criteria, depending on which the mobile detector at least data about its current position to the center (3) sends, form.
22. Endgerät nach einem der Ansprüche 19 bis 21 , dadurch gekennzeichnet, daß das Endgerät (1) derart ausgebildet ist, daß es eine Speicherung der empfangenen Daten des Straßennetzes vornimmt. 1522. Terminal according to one of claims 19 to 21, characterized in that the terminal (1) is designed such that it carries out a storage of the received data of the road network. 15
23. Endgerät nach einem der Ansprüche 19 bis 22, dadurch gekennzeichnet, daß das Endgerät (1) derart ausgebildet ist, daß es eine Prüfung der empfangenen Daten des Straßennetzes anhand der geographischen Position des mobilen Detektors durchführt und nur die für die Position relevanten Daten abgespeichert werden.23. Terminal according to one of claims 19 to 22, characterized in that the terminal (1) is designed such that it carries out a check of the received data of the road network based on the geographical position of the mobile detector and only stores the data relevant to the position become.
24. Endgerät nach einem der Ansprüche 19 bis 23, dadurch gekennzeichnet, daß im Endgerät (1) eine Codierung für die von der Zentrale (3) ausgesendeten Daten abgelegt ist und nur die Daten mit dieser Codierung vom Endgerät (1) gelesen werden können.24. Terminal according to one of claims 19 to 23, characterized in that a coding for the data transmitted by the control center (3) is stored in the terminal (1) and only the data with this coding can be read by the terminal (1).
25. Endgerät nach einem der Ansprüche 19 bis 24, dadurch gekennzeichnet, daß über einer definierten Größe der im Endgerät (1) abgespeicherten Daten, die Daten der Straßenabschnitte, die die größte Entfernung zur Position des mobilen Detektors aufweisen, gelöscht werden.25. Terminal according to one of claims 19 to 24, characterized in that above a defined size of the data stored in the terminal (1), the data of the road sections which are the greatest distance from the position of the mobile detector are deleted.
26. Endgerät nach einem der Ansprüche 19 bis 25, dadurch gekennzeichnet, daß das Endgerät (1) eine Mobilfunkeinrichtung (5) zumindest zur bidirektionalen Kommunikation mit der Zentrale (3) aufweist, welche einen von der Zentrale (3) ausgesendete Codierung für das Lesen der Daten des Straßennetzes empfangen kann und/oder empfängt und welche zumindest Daten über die momentane Position des mobilen Detektors senden kann und/oder sendet. 26. Terminal according to one of claims 19 to 25, characterized in that the terminal (1) has a mobile radio device (5) at least for bidirectional communication with the control center (3), which a coding from the control center (3) for reading which can receive and / or receive data from the road network and which can at least send and / or send data about the current position of the mobile detector.
PCT/EP2000/012664 1999-12-23 2000-12-13 Method for determining traffic information, control centre and terminal WO2001048725A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP00991596A EP1245019B1 (en) 1999-12-23 2000-12-13 Method for determining traffic information, control centre and terminal
DE50003769T DE50003769D1 (en) 1999-12-23 2000-12-13 METHOD FOR DETERMINING TRAFFIC INFORMATION AND THE CENTRAL AND TERMINAL
AT00991596T ATE250265T1 (en) 1999-12-23 2000-12-13 METHOD FOR DETERMINING TRAFFIC INFORMATION AS WELL AS CENTRAL AND TERMINAL DEVICE
AU33637/01A AU3363701A (en) 1999-12-23 2000-12-13 Method for determining traffic information, control centre and terminal

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Application Number Priority Date Filing Date Title
DE19962396 1999-12-23
DE19962396.1 1999-12-23

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EP (1) EP1245019B1 (en)
AT (1) ATE250265T1 (en)
AU (1) AU3363701A (en)
DE (2) DE50003769D1 (en)
WO (1) WO2001048725A1 (en)

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WO2005064565A1 (en) * 2003-12-19 2005-07-14 Bayerische Motoren Werke Aktiengesellschaft Recognition of junction areas on traffic status recognition
WO2009030524A1 (en) 2007-08-29 2009-03-12 Continental Teves Ag & Co. Ohg Personalized updating of digital navigation cards
CN110992706B (en) * 2019-12-24 2022-03-04 京东科技控股股份有限公司 Vehicle detection method and device and vehicle-road cooperation system

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ATE250265T1 (en) 2003-10-15
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